Linux · 
Amazon Linux · Security advisory · August 3, 2026
Amazon Linux · Security advisory · August 3, 2026ALAS2023-2026-2025: amazon-cloudwatch-agent security update
ALAS2023-2026-2025, released August 3, 2026, fixes 12 CVEs in amazon-cloudwatch-agent (version 1.300069.1-1.amzn2023). None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
12
None rated Critical
Exploited
0
None reported
Highest CVSS
9.1
Base score, 0 to 10
Highest EPSS
0.0068
52nd percentile
Priority of the 12 CVEs
Patch now 0
Urgent 0
High 8
Routine 4
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| amazon-cloudwatch-agent | amzn 2023 | 1.300069.1-1.amzn2023 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-39832 | Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent | 9.1 | 0.0068 | None reported |
| High | CVE-2026-39834 | Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh | 9.1 | 0.0060 | None reported |
| High | CVE-2026-27145 | Inefficient candidate hostname parsing in crypto/x509 | 8.2 | 0.0059 | None reported |
| High | CVE-2026-42504 | Quadratic complexity in WordDecoder.DecodeHeader in mime | 8.8 | 0.0056 | None reported |
| High | CVE-2026-39835 | Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh | 8.7 | 0.0050 | None reported |
| High | CVE-2026-46597 | Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh | 7.5 | 0.0047 | None reported |
| High | CVE-2026-39828 | Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh | 8.8 | 0.0037 | None reported |
| High | CVE-2026-39822 | Root escape via symlink plus trailing slash in os | 8.2 | 0.0023 | None reported |
| Routine | CVE-2026-46598 | Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent | 5.3 | 0.0041 | None reported |
| Routine | CVE-2026-42505 | Invoking Encrypted Client Hello privacy leak in crypto/tls | 5.3 | 0.0038 | None reported |
| Routine | CVE-2026-42507 | Arbitrary inputs are included in errors without any escaping in net/textproto | 5.3 | 0.0037 | None reported |
| Routine | CVE-2026-39827 | Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh | 6.5 | 0.0028 | None reported |
Showing 1 to 12 of 12
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